using System;

using Org.BouncyCastle.Crypto;

namespace Org.BouncyCastle.Bcpg.OpenPgp
{
	/// <remarks>General class to contain a private key for use with other OpenPGP objects.</remarks>
	public class PgpPrivateKey
	{
		private readonly long keyId;
		private readonly AsymmetricKeyParameter privateKey;

		/// <summary>
		/// Create a PgpPrivateKey from a regular private key and the ID of its
		/// associated public key.
		/// </summary>
		/// <param name="privateKey">Private key to use.</param>
		/// <param name="keyId">ID of the corresponding public key.</param>
		public PgpPrivateKey(
			AsymmetricKeyParameter	privateKey,
			long					keyId)
		{
			if (!privateKey.IsPrivate)
				throw new ArgumentException("Expected a private key", "privateKey");

			this.privateKey = privateKey;
			this.keyId = keyId;
		}

		/// <summary>The keyId associated with the contained private key.</summary>
		public long KeyId
		{
			get { return keyId; }
		}

		/// <summary>The contained private key.</summary>
		public AsymmetricKeyParameter Key
		{
			get { return privateKey; }
		}
	}
}
